.tree {
  padding-left: 5px;
  box-sizing: border-box;
  width: 100%;
}
.tree .tree-item {
  font-size: 14px;
  font-weight: 600;
  color: #1d2129;
  box-sizing: border-box;
  cursor: pointer;
}
.tree .tree-item p {
  padding-top: 5px;
  padding-bottom: 5px;
  box-sizing: border-box;
  display: flex;
  align-items: center;
}
.tree .tree-item p .trigonometry {
  display: inline-block;
  background: url(../img/xiala2.png) no-repeat;
  background-size: 100% 100%;
  width: 6px;
  height: 11px;
  margin-right: 7px;
  transition: transform 0.5s;
}
.tree .tree-item p .checkbox_active {
  background: url(../img/checkbox_active.png) no-repeat;
  display: inline-block;
  background-size: 100% 100%;
  width: 15px;
  height: 15px;
  margin-right: 7px;
}
.tree .tree-item p .checkbox {
  background: url(../img/checkbox.png) no-repeat;
  display: inline-block;
  background-size: 100% 100%;
  width: 15px;
  height: 15px;
  margin-right: 7px;
}
.tree .tree-item p .jian {
  background: url(../img/jian.png) no-repeat;
  display: inline-block;
  background-size: 100% 100%;
  width: 15px;
  height: 15px;
  margin-right: 7px;
}
.tree .tree-item p .jia {
  background: url(../img/jia.png) no-repeat;
  display: inline-block;
  background-size: 100% 100%;
  width: 15px;
  height: 15px;
  margin-right: 7px;
}
.tree .tree-item p .common_jian_jia {
  display: inline-block;
  background-size: 100% 100%;
  width: 15px;
  height: 15px;
  margin-right: 7px;
}
.tree .tree-item p .subTitle {
  color: #9ea6b0;
  font-weight: 600;
  font-size: 14px;
}
